@inproceedings{c4c7c2b6a4d7426384b0b5dfb5722b9a,
title = "Positron beams and two-photon exchange: The key to precision form factors",
abstract = "The proton elastic form factor ratio can be measured either via Rosenbluth separation in an unpolarized beam and target experiment, or via the use of polarization degrees of freedom. However, data produced by these two approaches show a discrepancy, increasing with Q2. The proposed explanation of this discrepancy - two-photon exchange - has been tested recently by three experiments. The results support the existence of a small two-photon exchange effect but cannot establish that theoretical treatment at the measured momentum transfers are valid. At larger momentum transfers, theory remains untested. This paper investigates the possibilities of measurements at DESY and Jefferson Lab to measure the effect at larger momentum transfers.",
author = "Bernauer, \{Jan C.\}",
note = "Publisher Copyright: {\textcopyright} 2018 Author(s).; International Workshop on Positron Physics at Jefferson Lab, JPos 2017 ; Conference date: 12-09-2017 Through 15-09-2017",
year = "2018",
month = may,
day = "25",
doi = "10.1063/1.5040203",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Eric Voutier and Joseph Grames",
booktitle = "International Workshop on Physics with Positron at Jefferson Lab",
}